https://github.com/jfoshee/unpluggedsegy

SEG-Y Reading in C#
https://github.com/jfoshee/unpluggedsegy

Last synced: about 2 months ago
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SEG-Y Reading in C#

• Host: GitHub
• URL: https://github.com/jfoshee/unpluggedsegy
• Owner: jfoshee
• License: other
• Created: 2011-12-17T00:24:04.000Z (about 13 years ago)
• Default Branch: master
• Last Pushed: 2023-01-27T09:33:06.000Z (almost 2 years ago)
• Last Synced: 2023-03-11T11:46:56.616Z (almost 2 years ago)
• Language: C#
• Homepage: http://segy.net
• Size: 3.52 MB
• Stars: 25
• Watchers: 8
• Forks: 16
• Open Issues: 1
• Metadata Files:
  • Readme: readme.md
  • License: license.txt

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README

        
# SEG-Y Reading Library in C# #

SEG-Y is a file format for seismic image data.  It is also known as SEGY or SGY.

Issues and sample data welcome. 

### Example

```C#

using System;

using Unplugged.Segy;

```

```C#

var reader = new SegyReader();

ISegyFile line = reader.Read(@"RMOTC Seismic data set\2D_Seismic\NormalizedMigrated_segy\lineA.sgy");

ITrace trace = line.Traces[0];

double mean = 0;

double max = double.MinValue;

double min = double.MaxValue;

foreach (var sampleValue in trace.Values)

{

    mean += sampleValue / trace.Values.Count;

    if (sampleValue < min) min = sampleValue;

    if (sampleValue > max) max = sampleValue;

}

Console.WriteLine(min);

Console.WriteLine(max);

Console.WriteLine(mean);

```

### Supported Sample Formats

- IBM Floating Point 4 (Big Endian)

- IEEE Floating Point 4 (Little Endian)

- Two's Complement Integer 4 (Big and Little Endian)

- Two's Complement Integer 2 (Big and Little Endian)

- Two's Complement Integer 1

### Current Known Limitations

- Assumed to be built on Little Endian architecture

- Sample Format not supported: Fixed Point With Gain 4

- Extended Text Headers are not supported

- Writing SEGY files is not supported

If you have example files of unsupported formats or feature requests, they would be appreciated!  Please, send to 

### Acknowledgements

Example data is courtesy of the [Rocky Mountian Oilfield Testing Center](http://www.rmotc.doe.gov/) and the U.S. Department of Energy

Resources on the SEG-Y format:

   - http://walter.kessinger.com/work/segy.html

   - http://en.wikipedia.org/wiki/SEG_Y

   - http://www.seg.org/documents/10161/77915/seg_y_rev1.pdf